@import "../../../node_modules/bootstrap/scss/bootstrap";
@import "./common.scss";
@import "./carousel.css";
@import "./footer.scss";
@import "./nav.scss";
#course_page .nav-link {
  color: #88bc56;
}
.course_01-section p {
  margin: 0;
  padding: 0;
}
.course_01-section {
  padding: 80px 0;
}
.course_01-section .row {
  justify-content: space-between;
}
.col-2_5 {
  flex: 0 0 20%;
  max-width: 20%;
  text-align: center;
  // display: flex;
}

.course_ico-title {
  font-size: 36px;
  color: #000;
  padding-top: 30px;
}
.course_ico-desc {
  font-size: 30px;
  color: #595757;
  padding-top: 15px;
}
//==================================================================
//==================================================================
//==================================================================
.kecheng {
  overflow: hidden;
}
.kecheng-wrap {
  position: relative;

  .desc {
    position: absolute;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    border-bottom: 1px solid #000;
    padding-bottom: 17px;
    font-size: 36px;
    color: #585757;
  }
}
.fisrt {
  padding-top: 91px;
}
.last{
  padding-bottom: 200px !important;
}
.intro-item {
  background-color: #fefefe;
  width: 100%;
  display: flex;
  justify-content: space-between;
  padding-bottom: 118px;
  position: relative;
  z-index: 2;
  .intro-wrap,
  .img-wrap {
    width: 50%;
  }
  .img-wrap {
    background-color: #fff;
    box-shadow: 0 6px 12px rgba(0, 0, 0, 0.3);
    padding: 10px;
    padding-bottom: 40px;
    z-index: 2;
    img {
      width: 100%;
    }
  }
  .intro-wrap {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    z-index: 2;
    .num-tl {
      width: 278px;
      height: 202px;
      position: relative;
      background: url(../../imgs/course/01.png) no-repeat;
      background-size: 100% auto;
      align-self: flex-start;
      position: relative;
      .tl {
        position: absolute;
        top: 50%;
        left: 0;
        transform: translateY(-50%);
        color: #3e3a39;
        font-size: 36px;
        font-weight: 500;
        width: 130%;
      }
    }
    .tl-1 {
      background: url(../../imgs/course/01.png) no-repeat;
      background-size: 100% auto;
    }
    .tl-2 {
      background: url(../../imgs/course/02.png) no-repeat;
      background-size: 100% auto;
    }
    .tl-3 {
      background: url(../../imgs/course/03.png) no-repeat;
      background-size: 100% auto;
    }
    .tl-4 {
      background: url(../../imgs/course/04.png) no-repeat;
      background-size: 100% auto;
    }
    .intro-text {
      font-size: 30px;
      color: #9fa0a0;
    }
  }
  .left {
    padding-right: 80px;
  }
  .right {
    padding-left: 80px;
  }
  .bg-img-1{
    position: absolute;
    width: 316px;
    height: 300px;
    background: url(../../imgs/course/xxmb-bg-1.png) no-repeat;
    background-size: 100% auto;
    left: 45%;
    transform: translateX(-50%);
    z-index: 1;
  }
  .bg-img-3{
    position: absolute;
    width: 316px;
    height: 300px;
    background: url(../../imgs/course/xxmb-bg-3.png) no-repeat;
    background-size: 100% auto;
    left: 45%;
    transform: translateX(-50%);
    z-index: 1;
  }
  .bg-line{
    position: absolute;
    width: 316px;
    height: 300px;
    background: url(../../imgs/course/bg-line.png) no-repeat;
    background-size: 100% auto;
    // background-color: rgba(0, 0, 0, 0.3);
    left: 50%;
    bottom:0;
    transform: translateX(-50%);
    z-index: 1;
    .bg-air-plane{
      position: absolute;
      width: 131px;
      height: 97px;
      background: url(../../imgs/course/bg-air-plane.png) no-repeat;
      background-size: 100% auto;
      right: -50%;
      top: 0;
      transform: translate(-50%, -50%) rotateX(-180deg);
      z-index: 1;
    }
  }
}
.intro-item:nth-child(2n) .bg-line{
  transform: translateX(-15%) rotateY(180deg);
  // transform: translateX(-50%);
}

.last .bg-line{
  transform: translate(-28%,-34%) rotateX(180deg) !important;
}